Re: 3 Phase rotary converters

--- In CAD_CAM_EDM_DRO@yahoogroups.com, David Speck <Dave@D...> wrote:

> Anyone have experience designing 3 phase rotary converters?
>
> I'm building a 10 HP unit now, and have seen designs for self

starting

> systems that use a voltage sensitive (potential) relay connected

between

> the midpoint of the powered winding and the derived phase to

disconnect

> the start capacitors when the converter motor reaches full speed.
>
> Can anyone suggest at what voltage the start relay should drop

out?

> I've seen specific part number suggested, but no actual voltage

ratings.

>
> Thanks in advance.
> Dave

Everything you want to know about rorory phase converters. Here is 3
articals.

http://www.metalwebnews.com/howto/ph-conv/ph-conv.html

http://www.homemetalshopclub.org/projects/phconv/phconv.html

http://www.kayind.com/tech_center/FAQ.htm


Wally